Hydraulic system for controlling smooth falling of bascule bridge to bridge support

Abstract

An embodiment of the invention discloses a hydraulic system for controlling smooth falling of a bascule bridge to a bridge support. The system comprises a prime mover connected with an oil pump, wherein the oil pump is connected with a hydraulic oil tank and a high-pressure filter, the high-pressure filter is connected with an accumulator, a three-position five-way electro-hydraulic directional valve and a normally-opening electromagnetic overflow valve, the accumulator is arranged on one side of a pressure oil port, communicating the three-position five-way electro-hydraulic directional valvewith the high-pressure filter, an oil return port of the electromagnetic overflow valve is connected with a hydraulic oil tank by an oil return filter. Two working oil ports of the three-position five-way electro-hydraulic directional valve are connected with two working oil ports of an oil cylinder and two integrated valve groups of the oil cylinder respectively, an oil return port of the three-position five-way electro-hydraulic directional valve is communicated with an oil leakage port and is connected with a leakage oil path of the oil cylinder. The problem about stable falling of the vertical turning type bascule bridge onto the bridge support is well solved, and the system is simple in structure, good in operability, very obvious in application effect and high in practical value and application prospect.

Description

technical field [0001] The invention relates to the field of hydraulic transmission systems of bridges, in particular to a hydraulic system for controlling the stable placement of an opening bridge to a bridge support. Background technique [0002] The vertical-rotating open bridge is an open bridge that makes the movable bridge span above the channel into a rotatable open-close bridge on the facade. The vertical rotation type opening bridge usually uses a hydraulic cylinder system to drive the movable bridge span to rotate around a main shaft, so as to realize the bridge span opening and closing action. Due to the long stroke, large volume and weight of the vertical rotary open axle oil cylinder, once it is installed in place, it is very difficult to disassemble and repair. Therefore, when designing and selecting the type, the design pressure of the oil cylinder is much higher than the actual working pressure. At the same time, in the design of the system circuit, the hydr...

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Problems solved by technology

[0004] The technical problem to be solved by the embodiments of the present invention is to propose a hydraulic system for controlling the smooth seating of the opening bridge to the bridge support in order to solve the impact problem of the opening bridge being seated smoothly.

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